欢迎来到天天文库
浏览记录
ID:41293123
大小:3.82 MB
页数:82页
时间:2019-08-21
《《英语课文总结》PPT课件》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit3TextOceansofSandTalkaboutthedesertheatstrokesweatingHuntingincolddesertShelterfromsnowstormStoringfoodBrainstormingworkingroupsoffour,discussandwritedownthewordsorexpressionsthatoccurtoyouwhenyoureadtheword“desert’.Usethesketchbelowasaguideinyour
2、discussion.sanddry/droughtsunhotcoldnorainclearskyplantsoasis(绿洲)pastureanimalbarren1.Whyaredesertwindsdry?2.Desertareveryhotduringtheday,whyaredesertnightsoftencold?3.Howplantssurviveindeserts?4.Wheredosmallanimalsliveindeserts?Whydotheylivethere?5.W
3、heredopeopleliveinsomedesert?6.Howtopreventdesertification?1.Whyaredesertwindsdry?Somedesertsarein“rainshadow”areawherethewindshavelostwhatmoisturetheyhadcrossinghighground.2.Desertareveryhotduringtheday,whyaredesertnightsoftencold?Becauseclearskiesal
4、lowheattoescapeintotheatmosphere.蒲公英dandelion3.Howplantssurviveindeserts?saguaromesquit(e)墨西哥合欢树属植物;牧豆树Someseedsofplantslieinthegroundforyearswaitingfortherain.Otherplantsstorewaterintheirleaves,stemsorroots.Manyclosetheirporesduringthedaysotheydonotl
5、osemoisture.4.Wheredosmallanimalsliveindeserts?Whydotheylivethere?Theyliveinholesorburrows.Holesorburrowstrapmoistureandstaycoolerthanthegroundabove.5.Wheredopeopleliveinsomedesert?aroundoases(fertileareas)formaroundwellsorsprings6.Howtopreventdeserti
6、fication1.Toplanttreesandhedges(树篱:由一排密种的灌木或长得低的树形成的一道栅栏或分界线)2.Toreducetheamountofanimalstoprotectcropsfromgrazing.3.Tobuildlinesofstonesacrossslopestopreventrainwaterrunningawayandallowittosoakintothesoil.LearningnewwordsLookatthepicturesandguesstheE
7、nglishnames.trytomemorizethemasmanyasyoucan蒲公英dandeliondandelion树形仙人掌saguarosaguaro仙人掌cacti(复数)cactusCactushasspines墨西哥合欢树属植物;牧豆树mesquit(e)mesquit(e)洞穴burrowburrowburrow(冷血的卵生)爬行动物reptilereptilereptilereptile浦乳动物mammalmammalmammalsidewindersidewinders
8、idewinder(美国西南部产的一种)响尾蛇沙漠中的绿洲oasis(pl.oases)oasis[əʊ’eɪsɪs][əʊ’eɪsɪ:z]lizardlizardlizard蜥蜴骆驼camelcamel牧场,草原pasturepasture鹅卵石pebblepebble沙砾gravelgravelgravelWritedownthewordsinblanksaccordingtothemeaning1.Notgoodenoughtoproducecrops.___________
此文档下载收益归作者所有